US3402760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-conditioning system having fresh air intake
Assignee: Individual
•
Filing: 1967-09-08
•
Granted: 1968-09-24
•
Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Cohen Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:59
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/83; F24F11/84; F24F11/88; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; G05D23/20; G05D23/24; F24F11/30; F24F2110/00; F24F2110/10; F24F2110/12; F24F2110/20; F24F2110/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984135A
Cited
US2053042A
Cited
US2195781A
Cited
US2913902A
Cited
US3118601A
Cited
US3346040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |